Fix structure of volume-coupled-diffusion (#489)

volume-coupled-diffusion/README.md

@@ -15,27 +15,24 @@ This case illustrates how to implement volume coupling in a simple toy problem.
 
 ## Available solvers and dependencies
 
+Both participants (Source and Drain):
+
 * FEniCS. Install [FEniCS](https://fenicsproject.org/download/) and the [FEniCS-adapter](https://github.com/precice/fenics-adapter). Additionally, you will need to have preCICE and the python bindings installed on your system.
 
 ## Running the simulation
 
-This tutorial is for FEniCS. You can find the corresponding `run.sh` script in the folder `fenics`.
-
-To choose whether you want to run the source or the drain solver, please provide the following command line input:
-
-* `-s` flag will create a source.
-* `-d` flag will create a drain.
-
-For running the case, open two terminals run:
+FEniCS is used to run the simulation. Open two separate terminals and start the source and drain participant by calling the respective run script `run.sh` located in the participant directory. For example:
 
 ```bash
-cd fenics
-./run.sh -s
+cd source-fenics
+./run.sh
 ```
 
 and
 
 ```bash
-cd fenics
-./run.sh -d
+cd drain-fenics
+./run.sh
 ```
+
+in order to use FEniCS for both participants in this test case.

volume-coupled-diffusion/drain-fenics/run.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+set -e -u
+
+python3 ../solver-fenics/volume-coupled-diffusion.py --drain

volume-coupled-diffusion/fenics/volume-coupled-diffusion.py → volume-coupled-diffusion/solver-fenics/volume-coupled-diffusion.py

@@ -26,10 +26,7 @@ def inside(self, x, on_boundary):
 command_group.add_argument("-d", "--drain", help="create a drain", dest="drain", action="store_true")
 args = parser.parse_args()
 
-if args.source:
-    precice = Adapter(adapter_config_filename="precice-adapter-config-source.json")
-elif args.drain:
-    precice = Adapter(adapter_config_filename="precice-adapter-config-drain.json")
+precice = Adapter(adapter_config_filename="precice-adapter-config.json")
 
 mesh = UnitSquareMesh(10, 10)
 V = FunctionSpace(mesh, "P", 1)

volume-coupled-diffusion/source-fenics/clean.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+set -e -u
+
+. ../../tools/cleaning-tools.sh
+
+clean_fenics .

volume-coupled-diffusion/source-fenics/run.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+set -e -u
+
+python3 ../solver-fenics/volume-coupled-diffusion.py --source